[Yujin sees the truth of those "allergies". He could tell moments before the tears moisten his waistcoat, not only from the sight of Sholmes's expression but also from his tone of voice. He wouldn't be the Great Detective's most treasured partner if he couldn't observe the little details and identify them for what they are. It's startling, not only because such genuine and raw shows of emotion come rare to Sholmes, but because of why these emotions were stirred in the first place.

He chuckles, both at the half-joke and to relieve some of his own tension. Then he moves both of his arms around the man's midriff to pull him in as close as possible.]

Thankfully, I'm not frightened with such ease. However... Half of the blame lies with me. I kept as quiet as you did. [Which isn't to say that he dragged his feet. He simply... never considered moving those feet forward to begin with.]